TWI550466B - Refleshing method of background signal and device applying the method - Google Patents
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Description
本發明係有關一種背景訊號更新方法與應用該方法的感測裝置，特別是關於一種能應用於追跡偵測的背景訊號更新方法及應用該方法的感測裝置。The present invention relates to a background signal updating method and a sensing apparatus using the same, and more particularly to a background signal updating method applicable to trace detection and a sensing apparatus applying the same.
觸控螢幕的技術演進從早期的單點觸控到多點觸控與追跡的偵測，一直都是技術待突破之處。The technology evolution of touch screens has been a breakthrough in technology from early single-touch to multi-touch and trace detection.
近期能夠用來做多點觸控與追跡偵測的觸控螢幕多是採用電容式觸控感測系統(capacitive touch panel)，此類感測系統利用自電容(self-capacitance)感測及/或互電容(mutual capacitance)感測的方式來得知面板是否有被使用者觸碰，在感測過程中，當感測系統的控制器偵測到某個位置的電容值的變化，即判斷該位置有被使用者觸碰。因此，感測系統在運作時，會對每一個座標都儲存有先前的電容值（未觸碰的電容值），俾利後續接收到最新的電容值時與該先前的電容值做比對，來判斷是否某位置有被觸碰。Recently, touch screens that can be used for multi-touch and tracing detection mostly use capacitive touch panels. These sensing systems use self-capacitance sensing and/or Or mutual capacitance sensing to know whether the panel is touched by the user. During the sensing process, when the controller of the sensing system detects a change in the capacitance value at a certain position, it is determined. The location is touched by the user. Therefore, when the sensing system is in operation, the previous capacitance value (untouched capacitance value) is stored for each coordinate, and the subsequent capacitance value is compared with the previous capacitance value when the latest capacitance value is received. To determine if a location has been touched.
由於前述先前的電容值是對應座標位置的，因此當面板的解析度提高時，儲存所需記憶體容量也跟著變大，此外，此先前的電容值會持續更新，更新所花運算時間也隨著變長，導致觸碰的靈敏度、與即時性即不佳，在使用者畫線時，很容易出現斷線、跟不上使用者的筆畫的速度等問題。Since the previous capacitance value is the corresponding coordinate position, when the resolution of the panel is increased, the memory capacity required for storage is also increased. In addition, the previous capacitance value is continuously updated, and the operation time of the update is also As the length becomes longer, the sensitivity and the immediacy of the touch are not good. When the user draws the line, it is easy to have problems such as disconnection and the speed of the user's stroke.
鑑於以上技術問題，本發明提出一種背景訊號更新方法及應用該方法的感測裝置，此方法與感測裝置在實現時可以有效地更新部分背景訊號，能更佳地辨視使用者畫線、較佳地追跡。In view of the above technical problems, the present invention provides a background signal updating method and a sensing device using the same. The method and the sensing device can effectively update part of the background signal when implemented, and can better distinguish the user's line drawing. Better to trace.
本發明之背景訊號更新方法適於一能接收位置資訊之感測裝置，該背景訊號更新方法包含獲得該位置資訊；依據一延伸參數、該位置資訊及一量測幅度獲得一更新區域；以及更新該更新區域的一背景訊號。The background signal updating method of the present invention is suitable for a sensing device capable of receiving location information, the background signal updating method includes obtaining the location information, obtaining an update region according to an extended parameter, the location information, and a measured amplitude; and updating A background signal for the update area.
依據一實施例，其中該獲得該位置資訊係為獲得多個該位置資訊，該依據該延伸參數、該位置資訊以及該量測幅度獲得該更新區域為依據該延伸參數、該些位置資訊以及該量測幅度獲得該更新區域，該獲得該更新區域係包含：獲得該延伸參數；以各該位置資訊為中心，依據該延伸參數與該量測幅度形成多個延伸區域；若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域；以及以該擴展區域及未交疊的該些延伸區域為該更新區域。According to an embodiment, the obtaining the location information is to obtain a plurality of the location information, and obtaining the update region according to the extension parameter, the location information, and the measurement range, according to the extension parameter, the location information, and the Measure the amplitude to obtain the update region, and the obtaining the update region includes: obtaining the extension parameter; and forming, by the location information, a plurality of extension regions according to the extension parameter and the measurement amplitude; if the extension regions are There are overlaps, and the overlapping regions that overlap are formed into an extended region; and the extended regions and the extended regions that are not overlapped are the updated regions.
依據一實施例，該擴展區域係為交疊的該些延伸區域的最大與最小水平座標、及最大與最小的垂直座標所形成。According to an embodiment, the extended region is formed by overlapping the maximum and minimum horizontal coordinates of the extended regions, and the largest and smallest vertical coordinates.
依據一實施例，前述獲得該位置資訊後，該依據該位置資訊以及該量測幅度獲得該更新區域係包含：以該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成一延伸區域；以及以該延伸區域為該更新區域。According to an embodiment, after obtaining the location information, the obtaining the update region according to the location information and the measurement range comprises: extending the measurement to the horizontal and vertical positive and negative directions centering on the location information. The amplitude forms an extended region; and the extended region is the updated region.
依據一實施例，該量測幅度為一預定移動速度值除以一量測取樣頻率。According to an embodiment, the magnitude of the measurement is a predetermined moving speed value divided by a measured sampling frequency.
依據一實施例，該預定移動速度值介於50到90公分/秒。According to an embodiment, the predetermined movement speed value is between 50 and 90 cm/sec.
依據一實施例，在該獲得該位置資訊之前另包含對該感測裝置的一感測區進行一驅動/偵測掃描。According to an embodiment, before the obtaining the location information, a driving/detecting scan of a sensing area of the sensing device is further included.
依據一實施例，在該感測裝置處於一待命狀態時，該以各該位置資訊為中心，依據該延伸參數與該量測幅度形成該些延伸區域係為以各該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成多個延伸區域。According to an embodiment, when the sensing device is in a standby state, the extension region is formed according to the extension parameter and the measurement amplitude, and the extension region is centered on each location information. The horizontal and vertical positive and negative directions each extend the measurement amplitude to form a plurality of extended regions.
依據一實施例，在該獲得該些位置資訊之前，該更新方法另包含對該感測裝置的一感測區進行一第一次驅動/偵測掃描，在該更新該更新區域的一背景訊號之後，該更新方法另包含對該感測裝置的該感測區進行一第二次驅動/偵測掃描。According to an embodiment, before the obtaining the location information, the updating method further comprises performing a first driving/detecting scan on a sensing area of the sensing device, and updating a background signal of the update area. Thereafter, the updating method further includes performing a second driving/detecting scan on the sensing area of the sensing device.
依據一實施例，在該第二次驅/偵測掃描後獲得該些第二次的位置資訊時，依據第一次的該些位置資訊與第二次的該些位置資訊獲得該延伸參數。According to an embodiment, when the second location information is obtained after the second flooding/detection scan, the extension parameter is obtained according to the first location information and the second location information.
依據一實施例，其中該依據第一次的該些位置資訊與第二次的該些位置資訊獲得該延伸參數包含：依據該第一次的該些位置資訊，獲得一第一代表位置；依據該第二次的該些位置資訊，獲得一第二代表位置；以及依據該第一代表位置與該第二代表位置，獲得該延伸參數。According to an embodiment, the obtaining the extension parameter according to the first location information and the second location information comprises: obtaining a first representative location according to the first location information; The second location information obtains a second representative location; and the extension parameter is obtained according to the first representative location and the second representative location.
依據一實施例，其中該延伸參數的方向係為以該第一代表位置朝向該第二代表位置的方向，延伸參數的大小與第一代表位置與第二代表位置的距離成正比例關係。According to an embodiment, wherein the direction of the extension parameter is a direction in which the first representative position is toward the second representative position, the magnitude of the extension parameter is proportional to the distance between the first representative position and the second representative position.
本發明之感測裝置包含一相互疊置的第一感測層與一第二感測層，該第一、二感測層具有一感測區，該觸控區內具有多個感測位置；以及一感測控制器，該感測控制器係執行：對該感測區進行一驅動/偵測掃描；獲得一位置資訊；依據一延伸參數、該位置資訊以及一量測幅度獲得一更新區域；更新該更新區域的一背景訊號。The sensing device of the present invention comprises a first sensing layer and a second sensing layer stacked on each other, the first and second sensing layers have a sensing area, and the sensing area has a plurality of sensing locations And a sensing controller, the sensing controller performs: performing a driving/detecting scan on the sensing area; obtaining a position information; obtaining an update according to an extension parameter, the position information, and a measurement range Area; updates a background signal for the update area.
首先，本發明的背景訊號更新方法可適於一能接收位置資訊之感測裝置，例如但不限於觸控螢幕、電子畫板、手寫板等裝置，本背景訊號更新方法應用的裝置可以是但不限於上述觸控螢幕、電子畫板、手寫板等裝置，以下之實施方式雖以觸控裝置為例進行說明，但並非用以限定本發明的範籌，例如在下述的實施方式中所描述的觸碰，若以觸控面板為例時該觸碰可以是用手或觸控筆來發生；若以電子畫板為例，則該觸碰可以是電子畫板對應的觸碰元件，如觸碰畫筆；若以手寫板為例，則該觸碰可以是手寫板對應的輸入元件，例如手寫筆或人的手。First, the background signal updating method of the present invention can be applied to a sensing device capable of receiving location information, such as, but not limited to, a touch screen, an electronic drawing board, a tablet, etc., and the device used in the background signal updating method may be but not The invention is limited to the above-mentioned touch screen, electronic drawing board, tablet, and the like. The following embodiments are described by taking a touch device as an example, but are not intended to limit the scope of the present invention, for example, the touch described in the following embodiments. If the touch panel is used as an example, the touch may be generated by a hand or a stylus; if the electronic drawing board is taken as an example, the touch may be a touch component corresponding to the electronic drawing board, such as a touch brush; If the tablet is taken as an example, the touch may be an input component corresponding to the tablet, such as a stylus or a human hand.
其次，在更新方法中所描述的「位置資訊」(例如步驟S50)，由於是應用於觸控裝置，因此，位置資訊可以是但不限於觸碰座標，此觸碰座標可以是但不於相對座標、絕對座標、或其他能表現所輸入位置的資訊。再者，此位置資訊在觸控裝置係為觸碰時由主機30或處理器18所獲得的，然若將本方法實現於手寫板、電子畫板等裝置時，則不限於觸碰之輸入方式，任何對應該應用裝置的輸入方式均涵蓋在本方法中的「獲得位置資訊」的範圍。Secondly, the "location information" described in the update method (for example, step S50) is applied to the touch device. Therefore, the location information may be, but not limited to, a touch coordinate, and the touch coordinates may be but not relative. Coordinates, absolute coordinates, or other information that shows the location you entered. Moreover, the location information is obtained by the host 30 or the processor 18 when the touch device is touched. However, if the method is implemented on a tablet, an electronic drawing board, etc., it is not limited to the input mode of the touch. Any input method corresponding to the application device is covered by the "Get Location Information" in this method.
此外，在下述的說明中，觸控裝置10係以透明為例進行說明，但本發明並不以此為限，若背景訊號更新方法是應用於電子畫板或手寫板，則觸控裝置10可以是但不限於不透明之設計。In the following description, the touch device 10 is described as an example of transparency. However, the present invention is not limited thereto. If the background signal update method is applied to an electronic drawing board or a tablet, the touch device 10 may be It is, but not limited to, an opaque design.
請參考「第1圖」，「第1圖」為應用本發明感測裝置的感測螢幕的電路方塊示意圖。圖中可以看出，感測螢幕包含感測裝置10、主機30、及顯示器32。感測裝置10另包含感測控制器12、第一感測層20、以及第二感測層22。在本實施例中感測裝置係以觸控裝置為例、感測控制器12係以觸控控制器12為例，但本發明之範圍並不限於此。Please refer to FIG. 1 and FIG. 1 is a block diagram showing the circuit of the sensing screen to which the sensing device of the present invention is applied. As can be seen, the sensing screen includes sensing device 10, host 30, and display 32. The sensing device 10 further includes a sensing controller 12, a first sensing layer 20, and a second sensing layer 22. In the embodiment, the sensing device is exemplified by the touch device, and the sensing controller 12 is exemplified by the touch controller 12, but the scope of the present invention is not limited thereto.
第一感測層20係疊置於第二感測層22上，第一感測層20與第二感測層22之間可以但不限於夾置有絕緣層（圖中未示）。以本實施例而言，第一感測層20包含多個平行列置的第一導電元件21a, 21b，而第二感測層22亦包含多個平行列置的第二導電元件23a, 23b，從頂視視角來看，第一導電元件21a, 21b與第二導電元件23a, 23b係構成一個平面座標系統，以此實施例為例，第一導電元件21a, 21b與第二導電元件23a, 23b係構成一個直角座標系統（笛卡爾座標系統，Cartesian Coordinate System），但本發明並不以此為限，實施本發明時亦可以採用極座標系統、非直角座標系統、或是其他平面座標系統。前述第一導電元件21a, 21b與第二導電元件23a, 23b交叉點可以是前述的感測位置。The first sensing layer 20 is stacked on the second sensing layer 22, and the first sensing layer 20 and the second sensing layer 22 may be, but are not limited to, sandwiched with an insulating layer (not shown). In this embodiment, the first sensing layer 20 includes a plurality of first conductive elements 21a, 21b arranged in parallel, and the second sensing layer 22 also includes a plurality of second conductive elements 23a, 23b arranged in parallel. From a top view, the first conductive elements 21a, 21b and the second conductive elements 23a, 23b form a planar coordinate system. As an example, the first conductive elements 21a, 21b and the second conductive elements 23a 23b constitutes a Cartesian Coordinate System (Cartesian Coordinate System), but the invention is not limited thereto, and the polar coordinate system, the non-orthogonal coordinate system, or other planar coordinate system can also be used in implementing the present invention. . The intersection of the first conductive elements 21a, 21b and the second conductive elements 23a, 23b may be the aforementioned sensing position.
「第1圖」中的第一、二導電元件21a, 21b, 23a, 23b是以條狀導電元件(Bar-type)為例，但並不以此為限，第一、二導電元件21a, 21b, 23a, 23b可以是在交疊後的頂視圖呈菱形蜂巢狀(Diamond-type)。此外，第一、二導電元件21a, 21b, 23a, 23b在某些設計當中可以位於同一平面，也就是僅位於單一感測層上。The first and second conductive elements 21a, 21b, 23a, and 23b in the "Fig. 1" are exemplified by a strip-shaped conductive element (Bar-type), but not limited thereto, the first and second conductive elements 21a, 21b, 23a, 23b may be diamond-shaped in a top view after overlapping. Furthermore, the first and second conductive elements 21a, 21b, 23a, 23b may lie in the same plane in some designs, that is, only on a single sensing layer.
顯示器32係配置於第二導電層22之下方，而第一感測層20、第二感測層22可以採用透明或半透明的設計，使得當顯示器32顯示資訊時，使用者能穿透第一、二感測層20, 22而看到顯示器32所顯示的內容，換句話說，顯示器32發出的光線可以穿過第二、一感測層22, 20而到達使用者的眼睛。如同前述，若本發明背景訊號更新方法係應用在電子畫板或手寫板或其他裝置時，此第一感測層20、第二感測層22則可以不採用透明半透明的設計。The display 32 is disposed under the second conductive layer 22, and the first sensing layer 20 and the second sensing layer 22 may adopt a transparent or translucent design, so that when the display 32 displays information, the user can penetrate the first The first and second sensing layers 20, 22 see the content displayed by the display 32. In other words, the light emitted by the display 32 can pass through the second, first sensing layers 22, 20 to reach the user's eyes. As described above, if the background signal updating method of the present invention is applied to an electronic drawing board or a tablet or other device, the first sensing layer 20 and the second sensing layer 22 may not adopt a transparent translucent design.
感測螢幕運作時，主機30係把欲顯示的資訊透過顯示器32顯示出來，當使用者觸碰感測裝置10時，感測裝置10係將被觸碰的座標傳回給主機30，由主機30的中央處理單元34(Central Processing Unit)做進一步處理。此進一步處理的內容視被觸碰座標對應顯示器32顯示位置之應用程式而定，例如但不限於中央處理單元34響應該觸碰動作而啟動某一應用程式、或在觸碰位置顯示筆觸等等。顯示器32用來顯示資訊的區域一般稱作主動區36 (Active Area, AA區)，而第一、二感測層20, 22對應該主動區36的區域可稱為感測區24，此感測區24係指能夠偵測使用者是否有觸碰事件發生。During the operation of the sensing screen, the host 30 displays the information to be displayed through the display 32. When the user touches the sensing device 10, the sensing device 10 transmits the touched coordinates back to the host 30. The central processing unit 34 (Central Processing Unit) 30 performs further processing. The content of this further processing depends on the application in which the touch coordinates correspond to the display position of the display 32, such as but not limited to the central processing unit 34 launching an application in response to the touch action, or displaying a stroke at the touch position, etc. . The area of the display 32 for displaying information is generally referred to as an active area 36 (Active Area, AA area), and the area of the first and second sensing layers 20, 22 corresponding to the active area 36 may be referred to as a sensing area 24, and this sense The measurement area 24 is capable of detecting whether a user has a touch event.
其次，感測控制器12包含驅動/偵測單元14、記憶體16、及處理器18。驅動/偵測單元14包含驅動元件及偵測元件，驅動元件及偵測元件可以整合成單一元件，也可以採用二個元件來實現，端視設計時之現況來決定。Next, the sensing controller 12 includes a driving/detecting unit 14, a memory 16, and a processor 18. The driving/detecting unit 14 includes a driving component and a detecting component. The driving component and the detecting component can be integrated into a single component or two components, and the terminal device can be determined according to the current situation of the design.
感測控制器12在感測使用者之觸碰情形時，可以採用自電容(self-capacitance)偵測，也可以採用互電容(mutual capacitance)偵測，舉自電容量測為例，處理器18控制驅動/偵測單元14，使得驅動/偵測單元14依序對第一導電元件21a, 21b進行驅動後偵測之動作、或依序對第二導電元件23a, 23b進行驅動偵測之動作，在此動作過程中，驅動/偵測單元14驅動某一第一導電元件21a後，可即進行偵測該第一導電元件21a自電容值，此自電容值的偵測可以是量測其充電到某個電壓位準所花的時間來推估(TCSV法，Time to Charge to Set Voltage)、或在充電一特定時間之後的電壓值來推估(VACST方法，Voltage After charging for a Set Time)。由於自電容量測是驅動/偵測單元14在某一個時間區間驅動並偵測某一條第一導電元件21a, 21b或某一條第二導電元件23a, 23b，因此，在量測到電容值產生變化時，是指該條導電元件21a, 21b, 23a, 23b的電容值產生變化，故只能判定某一水平位置或某一垂直位置被觸碰，而非某一點位被觸碰。The sensing controller 12 may use self-capacitance detection or mutual capacitance detection when sensing the user's touch situation, taking the capacitance measurement as an example, the processor The driving/detecting unit 14 controls the driving/detecting unit 14 to sequentially drive the first conductive elements 21a, 21b to detect the driving, or sequentially drive the second conductive elements 23a, 23b. During the operation, after the driving/detecting unit 14 drives a certain first conductive element 21a, the self-capacitance value of the first conductive element 21a can be detected, and the detection of the self-capacitance value can be measured. The time it takes to charge to a certain voltage level is estimated (TCSV method, Time to Charge to Set Voltage), or the voltage value after a specific time of charging is estimated (VACST method, Voltage After charging for a Set) Time). Since the self-capacitance measurement is that the driving/detecting unit 14 drives and detects a certain first conductive element 21a, 21b or a certain second conductive element 23a, 23b in a certain time interval, the capacitance value is measured. When changing, it means that the capacitance values of the conductive elements 21a, 21b, 23a, 23b change, so it can only be determined that a certain horizontal position or a certain vertical position is touched, and not a certain point is touched.
再以互電容量測為例進行說明，驅動/偵測單元14會選定一第一導電元件21a及一第二導電元件23a進驅動與偵測，量測時所得到的是該選定的第一導電元件21a與第二導電元件23a間的互電容值，如此一來，所偵測到的即為座標中的某一個點的互電容值，若此互電容值產生變化，即可判定該點位被觸碰。此種量測方式通常但不限於先量測某一第一導電元件21a在各個第二導電元件23a, 23b交叉點的互電容值，再量測另一第一導電元件21b在各個第二導電元件23a, 23b交叉點的互電容值，依此類推，把所有交叉點座標都量測完畢，屬於單一一次的驅動/偵測掃描，實際運作時要反覆地進行驅動/偵測掃描循環。Taking the mutual capacitance measurement as an example, the driving/detecting unit 14 selects a first conductive element 21a and a second conductive element 23a to be driven and detected, and the selected first is obtained during the measurement. The mutual capacitance value between the conductive element 21a and the second conductive element 23a, so that the mutual capacitance value of a certain point in the coordinate is detected, and if the mutual capacitance value changes, the point can be determined. The bit is touched. The measurement method is generally, but not limited to, first measuring the mutual capacitance value of a certain first conductive element 21a at the intersection of each of the second conductive elements 23a, 23b, and measuring another first conductive element 21b at each second conductive The mutual capacitance values of the intersections of the components 23a, 23b, and so on, all the intersection coordinates are measured, belonging to a single drive/detection scan, and the drive/detection scan cycle is repeated in actual operation.
前述的依序方式，可以採用每次增加一個或多個的方式進行依序驅動與偵測，舉例而言，若從最側邊的第一導電元件21a, 21b向另一側依序編號為1, 2, 3, 4, 5, 6，每次增加一個的依序的方式可以是1, 2, 3, 4, 5, 6，而每次增加二個的依序方式可以是1, 3, 5，接著進行2, 4, 6，而把整個面都驅動/偵測完畢，完成單一驅動/偵測掃描循環。In the foregoing sequential manner, sequential driving and detecting may be performed by adding one or more methods each time. For example, if the first conductive elements 21a, 21b from the outermost side are sequentially numbered to the other side, 1, 2, 3, 4, 5, 6, the order of adding one at a time can be 1, 2, 3, 4, 5, 6, and the order of adding two at a time can be 1, 3 5, then 2, 4, 6, and drive/detect the entire surface to complete a single drive/detect scan cycle.
前述單一一次的驅動/偵測掃描是以分時逐一驅動/偵測單一導電元件21a, 21b, 23a, 23b的方式進行，但實現本發明時，並不以此為限，例如，實現時，亦可採用同時驅動部分或全部的第一、二導電元件21a, 21b, 23a, 23b的方式進行，之後再同時偵測已驅動的第一導電元件21a, 21b, 23a, 23b；以同時驅動部分第一導電元件21a, 21b為例，可以先驅動奇數編號的第一導電元件21a後偵測，再驅動偶數編號的第一導電元件21b的後偵測的方式進行，如此一來，因採用同時驅動後偵測，故單一驅動/偵測掃描所花的時間將大為減少。The foregoing single driving/detecting scanning is performed by driving/detecting the single conductive elements 21a, 21b, 23a, 23b one by one, but the invention is not limited thereto, for example, when implemented, It is also possible to simultaneously drive some or all of the first and second conductive elements 21a, 21b, 23a, 23b, and then simultaneously detect the driven first conductive elements 21a, 21b, 23a, 23b; For example, the first conductive elements 21a, 21b can be driven after the odd-numbered first conductive elements 21a are driven, and then the even-numbered first conductive elements 21b are driven to be detected. After driving detection, the time spent on a single drive/detection scan will be greatly reduced.
前述量測到的自電容值或互電容值均是當前在該座標、水平位置、或垂直位置的電容值（為便於說明，以下皆以座標為例說明，但並不以此為限），欲得知是否有變化，都需與先前的電容值做一比對，此先前電容值可以是在出廠時即設定好的預設未觸碰電容值，亦可以是隨著使用環境而即時調整的未觸碰電容值，舉例來說，但不限於此例，例如當環境溫度或靜電值變化時，感測裝置的整個或某個區域的自電容值或互電容值即產生變化，此時，並未有使用者觸碰的事件發生，為免誤動作，處理器18即會即時更新未觸碰電容值。此類的即時更新若速度不夠快，在使用者同時觸碰多個點或在繪製軌跡時，會產生響應過慢或所繪製出來的線呈斷斷續續。The measured self-capacitance value or mutual capacitance value is the current capacitance value at the coordinate, horizontal position, or vertical position (for convenience of explanation, the following is an example of a coordinate, but not limited thereto), If you want to know if there is any change, you need to compare it with the previous capacitance value. The previous capacitance value can be the preset untouched capacitance value set at the factory, or it can be adjusted instantly with the use environment. The value of the untouched capacitance is, for example, but not limited to, for example, when the ambient temperature or the electrostatic value changes, the self-capacitance value or the mutual capacitance value of the entire or a certain region of the sensing device changes. There is no event that the user touches. To avoid malfunction, the processor 18 will immediately update the untouched capacitance value. If the instant update of this type is not fast enough, when the user touches multiple points at the same time or draws the track, the response will be slow or the drawn line will be intermittent.
請同時參閱「第1圖」與「第2圖」，「第2圖」為本發明背景訊號更新方法的流程示意圖。圖中可以看出，背景訊號更新方法包含：Please refer to "Figure 1" and "Figure 2" at the same time. "Figure 2" is a schematic flow chart of the background signal update method of the present invention. As can be seen in the figure, the background signal update method includes:
步驟S50: 獲得一位置資訊；Step S50: Obtaining a location information;
步驟S52: 依據該位置資訊以及一量測幅度獲得一更新區域；以及Step S52: obtaining an update area according to the location information and a measurement range;
步驟S54: 更新該更新區域的一背景訊號。Step S54: Update a background signal of the update area.
背景訊號更新方法係適於一能接收位置資訊之裝置。The background signal update method is suitable for a device capable of receiving location information.
步驟S50的獲得一位置資訊，指的是處理器18控制驅動/偵測單元14對感測裝置10的一感測區24進行驅動/偵測掃描，更明確地說是由驅動/偵測單元14對第一感測層20、第二感測層22的感測區24進行單次驅動/偵測掃描循環，藉以收集感測區24內所有座標在偵測當時的電容值。接著，處理器18可以將偵測到的電容值與記憶體16中的背景訊號值進行比對而得到差異值，此差異值通常對應著整個感測區24的每個座標位置，當某個座標點的差異值大於一預定門檻值(threshold)值時，處理器18即會判定該座標點為已觸碰點，並將此一觸碰點的資訊傳給主機30，此觸碰點的資訊即可為前述位置資訊並至少包含已觸碰座標，已觸碰座標可以是但不限於絕對座標、相對座標或其他能表現位置的資訊。以下的實施例說明，為了能更容易了解，因此，部分說明內容可能會將位置資訊直接用已觸碰座標來說明，但並非限縮「位置資訊」的範圍於「已觸碰座標」。Obtaining a position information in step S50 means that the processor 18 controls the driving/detecting unit 14 to perform driving/detecting scanning on a sensing area 24 of the sensing device 10, more specifically, by the driving/detecting unit. 14 performs a single driving/detecting scan cycle on the sensing regions 24 of the first sensing layer 20 and the second sensing layer 22, thereby collecting capacitance values of all coordinates in the sensing region 24 at the time of detection. Then, the processor 18 can compare the detected capacitance value with the background signal value in the memory 16 to obtain a difference value, where the difference value generally corresponds to each coordinate position of the entire sensing area 24, when a certain When the difference value of the coordinate point is greater than a predetermined threshold value, the processor 18 determines that the coordinate point is the touched point, and transmits the information of the touch point to the host 30, the touch point The information can be the location information and includes at least the touched coordinates. The touched coordinates can be, but are not limited to, absolute coordinates, relative coordinates, or other information that can represent the location. The following examples illustrate that, in order to make it easier to understand, some of the descriptions may directly describe the location information by the touched coordinates, but the scope of the "location information" is not limited to the "touched coordinates".
前述判斷某個座標點的差異值是否大於一預定門檻值是由處理器18進行判斷的，但並不以此為限，亦可以是由處理器18將差異值傳給主機30，由主機30進行判斷。The foregoing determining whether the difference value of a certain coordinate point is greater than a predetermined threshold is determined by the processor 18, but is not limited thereto, and the difference value may be transmitted by the processor 18 to the host 30 by the host 30. Make a judgment.
在本實施例中，獲得之位置資訊可能是一個也可能是多個，獲得多個位置資訊的情形有可能是同一區域內相鄰的多個座標（例如單一手指觸碰區包含了多個觸碰點，該些觸碰點的電容值變化該都會大於前述預定門檻值），此外，獲得多個位置資訊時也有可能是二組或多組未相鄰的位置資訊群組(單一位置資訊群組指多個相鄰的位置資訊的集合)，此時通常是使用者同時用二隻手指頭觸碰感測區24所獲得的多個位置資訊。以下茲各別對獲得一個或多個位置資訊進行說明。In this embodiment, the obtained location information may be one or more, and the multiple location information may be adjacent to multiple coordinates in the same area (for example, the single finger touch area includes multiple touches). In the touch point, the change in the capacitance value of the touch points is greater than the predetermined threshold value. In addition, when multiple position information is obtained, there may be two or more sets of non-adjacent position information groups (single position information group). A group refers to a collection of a plurality of adjacent location information. In this case, a plurality of location information obtained by the user simultaneously touching the sensing area 24 with two fingers is used. The following is a description of one or more location information.
首先，步驟S50以僅獲得單一已觸碰點為例，請同步參照「第3圖」，「第3圖」為單一已觸碰點的延伸區域的示意圖。所獲得的位置資訊為在觸碰區24內的(X1, Y1)，接著進行S52步驟，依據該位置資訊以及一量測幅度M(亦可稱為追跡幅度)獲得一更新區域240，請參考步驟S520：以該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成一延伸區域，換句話說，此更新區域240是以該位置資訊(X1, Y1)為中心，向水平及垂直的正、負方向各延伸該量測幅度M形成的延伸區域。其中，該量測幅度M為一預定移動速度值V除以量測取樣頻率K (M=V/K)，該預定移動速度值V可以是但不限於人手移動速度的上限，此預定移動速度值V可以是但不限於50到90公分/秒(cm/s)，實施時，若感測裝置表面的摩擦力較大時，此預定移動速度值V可以小一點，而其表面摩擦力較小時，則此預定移動速度值可以較大一點；部分研究報告顯示，人手移動速度上限是76 cm/s，但亦會隨著感測裝置而有所不同，並不以此為限。而量測取樣頻率K的單位是赫茲(Hz)，是指感測裝置每秒可以完成幾次驅動/偵測掃描與更新的次數（即頻率），量測取樣頻率K是與每個感測裝置的軟體、韌體與硬體有關。此量測幅度之設定雖以上述的關係式做說明，但並不以此為限，可以依實施時之實際需求而變動。First, in step S50, taking only a single touched point as an example, please refer to "3rd figure" in synchronization, and "3rd figure" is a schematic diagram of the extended area of a single touched point. The obtained position information is (X1, Y1) in the touch area 24, and then step S52 is performed, and an update area 240 is obtained according to the position information and a measurement amplitude M (also referred to as a trace width), please refer to Step S520: extending the measurement range to the horizontal and vertical positive and negative directions to form an extended area centering on the position information. In other words, the update area 240 is centered on the position information (X1, Y1). The extension region formed by the measurement amplitude M is extended to the positive and negative directions of the horizontal and vertical directions. Wherein, the measured amplitude M is a predetermined moving speed value V divided by the measured sampling frequency K (M=V/K), and the predetermined moving speed value V may be, but not limited to, an upper limit of the moving speed of the human hand, the predetermined moving speed The value V may be, but is not limited to, 50 to 90 cm/sec (cm/s). When the frictional force of the surface of the sensing device is large, the predetermined moving speed value V may be smaller, and the surface friction is smaller. In hours, the predetermined moving speed value can be larger; some research reports show that the upper limit of the manual movement speed is 76 cm/s, but it will vary with the sensing device, and is not limited to this. The unit of measurement sampling frequency K is Hertz (Hz), which refers to the number of times that the sensing device can perform several driving/detecting scans and updates per second (ie, frequency), and the sampling frequency K is measured with each sensing. The soft body and firmware of the device are related to the hardware. Although the setting of the measurement range is described by the above relationship, it is not limited thereto, and may be changed according to actual needs at the time of implementation.
前述向水平及垂直的正、負方向各延伸該量測幅度是以直角座標為例，水平正、負方向指的就是X軸的正方向與負方向，垂直的正、負方向則是指Y軸的正、負方向，因此，延伸區域即是圖示的(X1-M, Y1-M), (X1-M, Y1+M), (X1+M, Y1+M), (X1+M, Y1-M)四個點所構成的矩形。若將上述(X1, Y1)舉例為(380, 160)，而M舉例為40格點，則在水平、垂直的正、負方向延伸該量測幅度的延伸區域即是由(340, 120)、(340, 200)、(420, 200)、與(420, 120)構成的矩形。The above-mentioned measurement ranges extending in the positive and negative directions of the horizontal and vertical directions are examples of rectangular coordinates. The horizontal positive and negative directions refer to the positive and negative directions of the X-axis, and the vertical positive and negative directions refer to the Y. The positive and negative directions of the axis, therefore, the extended area is shown (X1-M, Y1-M), (X1-M, Y1+M), (X1+M, Y1+M), (X1+M , Y1-M) A rectangle consisting of four points. If the above (X1, Y1) is exemplified as (380, 160) and M is exemplified as 40 grid points, the extended region of the measurement amplitude extending in the horizontal and vertical positive and negative directions is (340, 120). , (340, 200), (420, 200), and (420, 120) rectangles.
在獲得延伸區域後，即以延伸區域做為更新區域240 (步驟S522)，如此一來，處理器18僅對該更新區域進行背景訊號的更新，而非對整個感測區24進行更新，故更新所花的時間將減少，整體效率提昇。其次，由於該更新區域是由位置資訊與量測幅度所延伸而得的，且該量測幅度已考量使用者繪製時最快的移動速度，故，即便使用者以非常快的速度在感測區24進行繪製，感測裝置10亦能成功地追跡，而不致有斷線的產生。前述的更新可以是處理器18將驅動/偵測單元14所讀到的背景訊號儲存於記憶體16。After the extended area is obtained, the extended area is used as the update area 240 (step S522), so that the processor 18 only updates the background signal of the update area instead of updating the entire sensing area 24, The time it takes to update will be reduced and the overall efficiency will increase. Secondly, since the update area is extended by the position information and the measurement range, and the measurement range has considered the fastest moving speed when the user draws, even if the user is sensing at a very fast speed. The area 24 is rendered and the sensing device 10 can also successfully trace without the occurrence of a broken line. The foregoing update may be that the processor 18 stores the background signal read by the driving/detecting unit 14 in the memory 16.
其次，再以S50所獲得的位置資訊為多個位置資訊為例進行說明，其中，將多個相鄰的位置資訊所構成的單一群組稱為位置資訊組，此處的「相鄰」可以是位置資訊所應的點之間僅相距單一格點，即二點之間已為最小觸碰解析單位、「相鄰」亦可以是位置資訊點之間的距離小於或等於前述的量測幅度M、或「相鄰」也可以是位置資訊點之間的距離小於或等於二倍的量測幅度M，詳細內容如下說明。Secondly, the location information obtained by the S50 is taken as an example for a plurality of location information, wherein a single group formed by a plurality of adjacent location information is referred to as a location information group, where "adjacent" can be It is only a single grid point between the points that the location information should be, that is, the minimum touch resolution unit between the two points, the "adjacent" or the distance between the position information points is less than or equal to the aforementioned measurement range. M, or "adjacent" may also be the measurement amplitude M whose distance between the position information points is less than or equal to twice, and the details are as follows.
請同時參閱「第2圖」與「第4A圖」，「第4A圖」為本發明一位置資訊組的延伸區域第一實施例的示意圖。Please refer to "FIG. 2" and "FIG. 4A" at the same time. FIG. 4A is a schematic diagram of a first embodiment of an extended area of a location information group according to the present invention.
從「第2圖」可以得知，在獲得多個位置資訊時依序執行步驟S502: 若獲得多個位置資訊，以各該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成多個延伸區域；It can be seen from the "Fig. 2" that step S502 is sequentially executed when a plurality of pieces of position information are obtained: if a plurality of pieces of position information are obtained, the position information is centered on each of the positions, and the horizontal and vertical directions are extended in the positive and negative directions. Measuring the amplitude to form a plurality of extended regions;
步驟S504: 若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域；以及Step S504: if there are overlaps between the extended regions, the overlapping regions that overlap are formed into an extended region;
步驟S506: 以該擴展區域及未交疊的該些延伸區域為該更新區域。Step S506: The extended area and the extended areas that are not overlapped are the updated area.
「第4A圖」中可以得知所獲得的位置資訊組包含了8個位置資訊點，其中最右邊、最左邊、最上面、與最下面的座標點分別命名為PR, PL, PT, PB，這8個位置資訊之間為僅相距單一解析距離的「相鄰」關係。在進行了步驟S502之後，將形成8個延伸區域，這8個延伸區域之間均具有交疊，其中最右邊、最左邊、最上面、與最下面的延伸區域各別編號為ZR, ZL, ZT, ZB。在進行步驟S506時，處理器18將有交疊的區域形成一擴展區域242，此擴展區域242即是由最右邊延伸區域ZR的右邊界、最左邊延伸區域ZL的左邊界、最上面延伸區域ZT的上邊界與最下面延伸區域ZB的底邊界所構成。In Figure 4A, it can be seen that the obtained location information group contains 8 location information points, and the rightmost, leftmost, uppermost, and lowermost coordinate points are named PR, PL, PT, PB, respectively. The eight location information is an "adjacent" relationship that is only separated by a single resolution distance. After step S502 is performed, eight extended regions will be formed, and the eight extended regions have an overlap therebetween, wherein the rightmost, leftmost, uppermost, and lowermost extended regions are respectively numbered ZR, ZL, ZT, ZB. When step S506 is performed, the processor 18 forms an overlapped area 242, which is the right boundary of the rightmost extended area ZR, the left boundary of the leftmost extended area ZL, and the uppermost extended area. The upper boundary of the ZT is formed with the bottom boundary of the lowermost extension region ZB.
接著，在「第4A圖」實施例中，並無未交疊的延伸區域，因此，步驟S506即以上述擴展區域為更新區域，由處理器18僅針對該更新區域進行背景訊號更新，如此一來，即無需對整個感測區24進行更新，更新所花的時間將更少，更有效率。Next, in the embodiment of FIG. 4A, there is no extended area that is not overlapped. Therefore, in step S506, the extended area is used as the update area, and the processor 18 updates the background signal only for the update area. That is, there is no need to update the entire sensing area 24, and the update takes less time and is more efficient.
請續參閱「第4B圖」，「第4B圖」為本發明位置資訊組的延伸區域第二實施例的示意圖。圖中可以看見左側的二個位置資訊點P1, P2的距離係為小於量測幅度M的實施態樣，而右側的二個位置資訊點P3, P4的距離係為小於二倍的量測幅度M的實施態樣，但此並非用以限縮本發明。處理器18進行了步驟S502後，得到的是4個延伸區域Z1, Z2, Z3, Z4，其中Z1, Z2之間有交疊，而Z3, Z4之間有交疊，因此，處理器18執行了S504步驟後，得到二個擴展區域E1, E2；接著，處理器18執行步驟S506，將擴展區域E1, E2設定為更新區域，並於步驟S54對該更新區域的背景訊號進行更新。Please refer to "FIG. 4B" and "FIG. 4B" for a second embodiment of the extended area of the location information group of the present invention. In the figure, the two position information points P1 on the left side can be seen, and the distance between P2 is smaller than that of the measurement amplitude M, and the distance between the two position information points P3 and P4 on the right side is less than twice the measurement range. The implementation of M, but this is not intended to limit the invention. After the processor 18 performs step S502, four extended regions Z1, Z2, Z3, and Z4 are obtained, wherein there is an overlap between Z1 and Z2, and there is an overlap between Z3 and Z4. Therefore, the processor 18 executes After the step S504, two extended areas E1, E2 are obtained; then, the processor 18 executes step S506 to set the extended areas E1, E2 as update areas, and updates the background signal of the update area in step S54.
前述右側的二個延伸區域Z3, Z4（觸碰座標點P3, P4之間相距大於一個量測幅度但小於等於二個量測幅度），在實現時，可以形成單一擴展區域，亦可以不形成單一擴展區域，視實際情形而定，本發明並不以此為限。The two extension regions Z3, Z4 on the right side (the distance between the touch points P3 and P4 is greater than one measurement range but less than or equal to two measurement amplitudes), and a single extension region may or may not be formed when implemented. The single extended area is determined by the actual situation, and the present invention is not limited thereto.
再者，請同時參閱「第2圖」與「第5圖」，「第5圖」為本發明位置資訊組的擴展區域與延伸區域第一實施例的示意圖。In addition, please refer to "Fig. 2" and "Fig. 5" at the same time. "Fig. 5" is a schematic diagram of the first embodiment of the extended area and the extended area of the position information group of the present invention.
從「第5圖」可以得知，所獲得的位置資訊組包含了二個位置資訊組G1, G2及一個單一位置資訊點P5，該二位置資訊組G1, G2經由步驟S504後，即會得到二個擴展區域E3, E4，而單一位置資訊P5則會形成另一個延伸區域Z5。接著，進行步驟S506，即將擴展區域E3, E4與延伸區域Z5設定為更新區域，接著，處理器18即將對應該更新區域的背景訊號予以更新。It can be known from the "figure 5" that the obtained location information group includes two location information groups G1, G2 and a single location information point P5, and the two location information groups G1, G2 are obtained after step S504. Two extended areas E3, E4, and a single positional information P5 form another extended area Z5. Next, in step S506, the extended areas E3, E4 and the extended area Z5 are set as the update area, and then the processor 18 updates the background signal corresponding to the updated area.
關於本發明之另一實施例，請同時參閱「第6圖」與「第7圖」，「第6圖」為本發明位置資訊組的擴展區域與延伸區域第二實施例的示意圖。「第7圖」為第6圖實施例之流程示意圖。在此實施例中係考量到使用者目前觸碰時移動方向與速度。此實施例的背景訊號更新方法包括：For another embodiment of the present invention, please refer to "FIG. 6" and "FIG. 7" at the same time. "FIG. 6" is a schematic diagram of a second embodiment of an extended area and an extended area of the location information group of the present invention. Fig. 7 is a schematic flow chart of the embodiment of Fig. 6. In this embodiment, the direction and speed of movement of the user at the current touch are considered. The background signal update method of this embodiment includes:
S50： 獲得一位置資訊；S50: obtaining a location information;
S52’: 依據一延伸參數、該位置資訊以及一量測幅度獲得一更新區域；以及S52': obtaining an update area according to an extension parameter, the position information, and a measurement range;
S54: 更新該更新區域的一背景訊號。S54: Update a background signal of the update area.
其中，當S50的獲得位置資訊是獲得多個位置資訊時，，S52’的依據該延伸參數、該些位置資訊以及該量測幅度獲得該更新區域包含：Wherein, when the obtained location information of the S50 is to obtain the plurality of location information, the update region obtained by the S52' according to the extension parameter, the location information, and the measurement range includes:
步驟S510: 獲得該延伸參數pe；Step S510: Obtain the extension parameter pe;
步驟S512: 以各該位置資訊為中心，依據該延伸參數與該量測幅度形成多個延伸區域；Step S512: forming a plurality of extended regions according to the extension parameter and the measurement amplitude, centering on each location information;
步驟S514: 若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域；以及Step S514: if there are overlaps between the extended regions, the overlapping regions that overlap are formed into an extended region;
步驟S516: 以該擴展區域及未交疊的該些延伸區域為該更新區域。Step S516: The extended area and the extended areas that are not overlapped are the updated area.
前述的延伸參數pe係可以是但不限於對應使用者筆觸移動的速度向量，包含了方向與速度值，如此一來，處理器18即可預知使用者接下來可能移動的方向，例如向水平正向移動某速度，因此，在形成延伸區域時，可以在水平正向延伸時依該速度與量測幅度適當調整延伸的長度，而水平負向的延伸長度則可以略減少一點（不能在水平負向不延伸，因還需考量使用者會反向移動），如「第6圖」所示的延伸區域240’。由於步驟S512, S514, S516與前述S502, S504, S506類似，故不再贅述。The foregoing extension parameter pe may be, but is not limited to, a velocity vector corresponding to the movement of the user's stroke, including the direction and velocity values, so that the processor 18 can predict the direction in which the user may move next, for example, horizontally. To move a certain speed, therefore, when forming the extended region, the length of the extension can be appropriately adjusted according to the speed and the measured amplitude when the horizontal forward direction is extended, and the extension length of the horizontal negative direction can be slightly reduced (not at the horizontal negative The extension does not extend, because it is also necessary to consider that the user will move backwards, such as the extended area 240' shown in "Fig. 6". Since steps S512, S514, and S516 are similar to the foregoing S502, S504, and S506, they are not described again.
延伸參數pe之設定係有幾種方式，延伸參數pe可以是一個固定值，亦可以是與使用者的筆觸移動速度有關，當延伸參數是一個定值時，可以設定為人手、觸控筆或輸入元件在感測裝置10上移動時的最大速度或是平均速度。There are several ways to set the extension parameter pe. The extension parameter pe can be a fixed value, or it can be related to the user's stroke speed. When the extension parameter is a fixed value, it can be set as a human hand, a stylus or The maximum speed or average speed of the input element as it moves over the sensing device 10.
此外，在感測裝置10處於偵測狀態但尚未有觸碰事件發生時(以下簡稱待命狀態)，該延伸參數pe可以但不限於設為零、1或null (以下以1為例說明)，意即，尚未取得任何使用者筆觸的軌跡，此時無需預測使用者筆觸移動的方向與移動的速度，故延伸參數的初始值為1。In addition, when the sensing device 10 is in the detecting state but no touch event has occurred (hereinafter referred to as the standby state), the extended parameter pe may be, but not limited to, set to zero, 1 or null (hereinafter, 1 is taken as an example). That is to say, the trajectory of any user's stroke has not been obtained, and it is not necessary to predict the direction of the user's stroke movement and the speed of movement at this time, so the initial value of the extension parameter is 1.
感測裝置10在待命狀態時，係持續對感測區24進行驅動/偵測掃描，當在某一次的驅動/偵測掃描時獲得一個或多個位置資訊(S50)，接著即進行S52與S54，在「第6圖」與「第7圖」的實施例中，係為在S50時獲得多個位置資訊（獲得一個位置資訊的實施例容後詳述），並於S52部分另包含S510, S512, S514, S516，其中，在感測裝置10處於待命狀態後第一次獲得位置資訊時，因該延伸參數為1，故在S512時的步驟即類似S502的「以各該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成多個延伸區域」，接著，在完成當次的S514, S516及S54後，感測裝置10會再進行下一次（以下簡稱第二次）的驅動/偵測掃描並依序進行S52, S54，此時延伸參數pe仍為1，尚未更新。When the sensing device 10 is in the standby state, the driving/detecting scanning is continuously performed on the sensing region 24, and one or more position information is obtained when a certain driving/detecting scanning is performed (S50), and then S52 is performed. S54. In the embodiments of "Fig. 6" and "Fig. 7", a plurality of position information is obtained at S50 (the embodiment of obtaining a position information is detailed later), and S510 is further included in S52. S512, S514, S516, wherein, when the location information is obtained for the first time after the sensing device 10 is in the standby state, since the extension parameter is 1, the step at S512 is similar to S502. Center, extending the measured amplitude to the horizontal and vertical positive and negative directions to form a plurality of extended regions", and then, after completing the current S514, S516 and S54, the sensing device 10 will perform the next time (hereinafter referred to as The second drive/detect scan is performed in sequence S52, S54, and the extension parameter pe is still 1 and has not been updated.
若感測裝置10在進行第二次驅動/偵測掃描時並未獲得任何位置資訊(即無觸碰事件發生)，則延伸參數pe仍設為1且感測裝置10即處理待命狀態(持續進行驅動/偵測掃描)。若感測裝置10在進行第二次驅動/偵測掃描時有獲得位置資訊(S50)，感測裝置10即可藉由第一次與第二次驅動/偵測掃描所獲得的位置資訊(簡稱連續獲得的位置資訊)來設定該延伸參數pe。前述連續獲得的位置資訊係指在前、後次驅動/偵測掃描所獲得的位置資訊，並非指單一次驅動/偵測掃描時所獲得的多個位置資訊。If the sensing device 10 does not obtain any position information during the second driving/detecting scan (ie, no touch event occurs), the extension parameter pe is still set to 1 and the sensing device 10 processes the standby state (continued) Drive/detect scan). If the sensing device 10 obtains position information during the second driving/detecting scan (S50), the sensing device 10 can obtain the position information obtained by the first driving and the second driving/detecting scanning ( Referring to the position information obtained continuously, the extension parameter pe is set. The continuously obtained position information refers to the position information obtained by the front and rear drive/detection scans, and does not refer to the plurality of position information obtained when the single drive/detection scan is performed.
前述連續獲得的位置資訊有四種可能，其一為第一次與第二次都是單一位置資訊；其二為第一次是單一位置資訊而第二次是多個位置資訊；其三為第一次與第二次都是多個位置資訊；其四為第一次是多個位置資訊而第二次為單一位置資訊，無論是上述那一種態樣，能均獲得前述延伸參數pe。在取得多個位置資訊時可以但不限於將該些多個位置資訊轉換成一代表位置，例如，該代表位置可以是但不限於該些位置資訊的幾何中心、或座標的眾數(即由水平座標的眾數與垂直座標的眾數所構成的座標)。若獲得的是單一位置資訊時，即該代表位置即為該單一位置資訊。There are four possibilities for the above-mentioned continuously obtained location information, one of which is single location information for the first time and the second time; the second is single location information for the first time and multiple location information for the second time; The first time and the second time are multiple location information; the fourth is the first time is a plurality of location information and the second time is a single location information, and in any of the above aspects, the foregoing extension parameter pe can be obtained. When the plurality of location information is obtained, the plurality of location information may be converted into a representative location, for example, the representative location may be, but is not limited to, a geometric center of the location information, or a mode of the coordinates (ie, by the level) The coordinates of the mode of the coordinates and the mode of the vertical coordinates). If a single location information is obtained, the representative location is the single location information.
前述延伸參數pe即為基於該第一次的代表位置與第二次的代表位置所獲得的，該延伸參數pe可是但不限於該第一次的代表位置與第二次的代表位置所形成的向量，在S512「以各該位置資訊為中心，依據該延伸參數與該量測幅度形成多個延伸區域」時，每一延伸區域係在與該向量同方向上延伸的距離係大於與該向量反方向上延伸的距離，例如，在延伸參數為1時，從中心向水平、垂直正負向延伸之距離是一量測幅度，當延伸參數為一向量時，假設此向量為正水平方向(+X)，則從中心向正水平方向上延伸的距離會大於一量測幅度，從中心向負水平方向(-X)上的延伸距離會小於一量測幅度，而由於該向量是正水平方向，因此，在垂直方向(Y)上則延伸的距離不變，仍維持一個量測幅度。另如，當該向量是指向從水平仰角45度時，則在水平正向(+X)與垂直正向(+Y)上延伸大於一量測幅度的距離，而在水平負向(-X)與垂直負向(-Y)上延伸小於一量測幅度的距離，其餘以此類推。The extension parameter pe is obtained based on the first representative position and the second representative position, and the extension parameter pe may be, but not limited to, the first representative position and the second representative position. a vector, in S512, "based on each position information, forming a plurality of extended regions according to the extension parameter and the measurement amplitude", each extended region is extended in a direction parallel to the vector greater than the vector inverse The distance extended upwards, for example, when the extension parameter is 1, the distance extending from the center to the horizontal and vertical positive and negative directions is a measured amplitude. When the extension parameter is a vector, the vector is assumed to be a positive horizontal direction (+X). , the distance extending from the center to the positive horizontal direction is greater than a measured amplitude, and the extending distance from the center to the negative horizontal direction (-X) is less than a measured amplitude, and since the vector is a positive horizontal direction, The distance extended in the vertical direction (Y) is constant and a measured amplitude is maintained. For example, when the vector is directed at 45 degrees from the horizontal elevation angle, then the distance in the horizontal forward direction (+X) and the vertical forward direction (+Y) is greater than a measured amplitude, and in the horizontal negative direction (-X). ) extends over a vertical negative (-Y) distance that is less than a measured amplitude, and so on.
其次，前述「每一延伸區域係在與該向量同方向上延伸的距離係大於與該向量反方向上延伸的距離」中所大於的幅度可以是但不限於與向量的大小有關，當向量的大小愈大時，在向量指向方向上的延伸距離增加的比例即較高，反之，即較小。此向量的大小，為了便於計算，亦可以是將該大小與一預設值進行比較而獲得一比例值，而延伸距離即可以是該量測幅度乘上或除以該比例值。此預設值可以但不限於前述人手能在感測裝置10上移動的最大速度。Secondly, the above-mentioned "the extent that each extended region extends in the same direction as the vector is greater than the distance extending in the opposite direction of the vector" may be, but is not limited to, related to the size of the vector, and the size of the vector is increased. When large, the ratio of the extension distance in the direction in which the vector is pointed is higher, and vice versa. The size of the vector may be obtained by comparing the size with a preset value to obtain a proportional value, and the extended distance may be the measured amplitude multiplied or divided by the proportional value. This preset value may be, but is not limited to, the maximum speed at which the aforementioned human hand can move on the sensing device 10.
從上述可知，該延伸參數可以與該第一代表位置與該第二代表位置有關，意即，第一代表位置與第二代表位置所形成的向量可以是以第一代表位置與第二代表位置為大小，而第一代表位置朝第二代表位置的方向為方向的向量；而延伸參數則可以是與該向量有關，延伸參數的大小可以是與該向量的大小成正比例的關係。As can be seen from the above, the extension parameter may be related to the first representative position and the second representative position, that is, the vector formed by the first representative position and the second representative position may be the first representative position and the second representative position. The size is a vector in which the direction of the first representative position is the direction toward the second representative position; and the extension parameter may be related to the vector, and the size of the extension parameter may be a relationship proportional to the size of the vector.
前述的實施例係以獲得多個位置資訊為例進行背景訊號更新，若第一次與/或第二次驅動/偵測掃描僅獲得單一位置資訊，則仍採用類似S520、S522方式進行，意即以「第7圖」的S530「獲得該延伸參數」、S532「以該位置資訊為中心，依據該延伸參數與該量測幅度形成一延伸區域」、與S534「以該延伸區域為該更新區域」來獲得更新區域。此實施例中，延伸參數pe的獲得亦同前述，故不再贅述。The foregoing embodiment is to obtain a plurality of location information as an example for background signal update. If the first and/or second drive/detection scan only obtains single location information, the method is similar to S520 and S522. That is, in S530 of "Fig. 7", "the extension parameter is obtained", S532 "based on the position information, an extension region is formed according to the extension parameter and the measurement width", and S534 "the extension region is the update" Area to get the update area. In this embodiment, the obtaining of the extension parameter pe is also the same as that described above, and therefore will not be described again.
因此，在同時實施前述獲得多個位置資訊及獲得單一位置資訊之實施例時，可以將S52的「依據該位置資訊以及量測幅度獲得一更新區域」改為「依據一延伸參數、該位置資訊以及量測幅度獲得一更新區域」(S52’)，如此即涵蓋了前述連續獲得的位置資訊的四種可能態樣的組合。Therefore, when the foregoing embodiment of obtaining a plurality of location information and obtaining single location information is performed at the same time, the "acquiring an update area according to the location information and the measurement range" of S52 may be changed to "based on an extension parameter, the location information. And the measurement amplitude obtains an update area" (S52'), thus covering the combination of the four possible aspects of the aforementioned continuously obtained position information.
前述的背景訊號更新方法係可以由感測裝置10中的感測控制器12來執行，例如，感測控制器12藉由處理器18來驅動/偵測單元14來獲得在單一次驅動/偵測掃描後的至少一位置資訊，接著處理器18則可進行前述S52, S54或S502, S504, S506或S520, S522或S510, S512, S14, S516等步驟。The foregoing background signal update method may be performed by the sensing controller 12 in the sensing device 10. For example, the sensing controller 12 drives/detects the unit 14 by the processor 18 to obtain a single drive/detection. After scanning the at least one location information, the processor 18 may perform the foregoing steps S52, S54 or S502, S504, S506 or S520, S522 or S510, S512, S14, S516 and the like.
在執行前述S50前(即前述待命狀態)，主機30係持續對第一感測層20、第二感測層22進行驅動與偵測，意即主機30通知處理器18進行驅動與偵測動作，處理器18控制驅動/偵測單元14對第一感測層20、第二感測層22進行驅動/偵測而獲得一量測電容值，處理器18將此量測電容值與儲存於記憶體16的預定門檻值進行判斷，若判斷無觸碰事件，則繼續進行驅動與偵測動作(全面)；反之，若判斷有已觸碰事件，則處理器18即獲得該位置資訊(S50)，並繼續執行後續步驟：處理器18係設定更新區域並將設定存入暫存器15 (S52)，處理器18再取得背景訊號並更新記憶體16中的背訊號(S54)。Before performing the foregoing S50 (ie, the standby state), the host 30 continuously drives and detects the first sensing layer 20 and the second sensing layer 22, that is, the host 30 notifies the processor 18 to perform driving and detecting operations. The processor 18 controls the driving/detecting unit 14 to drive/detect the first sensing layer 20 and the second sensing layer 22 to obtain a measured capacitance value, and the processor 18 stores and stores the measured capacitance value. The predetermined threshold value of the memory 16 is determined. If it is determined that there is no touch event, the driving and detecting actions are continued (full); otherwise, if it is determined that there is a touch event, the processor 18 obtains the location information (S50) And proceeding to the subsequent steps: the processor 18 sets the update area and stores the settings in the register 15 (S52), and the processor 18 acquires the background signal and updates the back signal in the memory 16 (S54).
此外，主機30亦可儲存有背景訊號，由處理器18自主機30取得背景訊號並儲存於暫存器15中，在S54時，由處理器18更新暫存器15中的背景訊號。另一種實施態樣為，主機30儲存有背景訊號，處理器18設定更新區域後，將設定儲存於暫存器15 (S52)，處理器18僅將已觸碰訊號(位置資訊)轉為位置資訊後傳輸至主機30，由主機更新儲存於記憶體的背景訊號(S54)。In addition, the host 30 can also store the background signal, and the processor 18 obtains the background signal from the host 30 and stores it in the register 15. At S54, the processor 18 updates the background signal in the register 15. In another embodiment, the host 30 stores the background signal, and after the processor 18 sets the update area, the settings are stored in the register 15 (S52), and the processor 18 only converts the touched signal (location information) into a position. The information is transmitted to the host 30, and the host updates the background signal stored in the memory (S54).
雖然本發明以前述之實施例揭露如上，然其並非用以限定本發明，任何熟習相像技術者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.
10‧‧‧感測裝置
12‧‧‧感測控制器
14‧‧‧驅動/偵測單元
15‧‧‧暫存器
16‧‧‧記憶體
18‧‧‧處理器
20‧‧‧第一感測層
21a,21b‧‧‧第一導電元件
22‧‧‧第二感測層
23a,23b‧‧‧第二導電元件
24‧‧‧感測區
240,240’‧‧‧延伸區域
242,E1,E2,E3,E4‧‧‧擴展區域
30‧‧‧主機
32‧‧‧顯示器
34‧‧‧中央處理單元
36‧‧‧主動區(Active Area)
G1,G2‧‧‧位置資訊組
P1,P2,P3,P4,P5‧‧‧位置資訊點
PR,PL,PT,PB‧‧‧位置資訊點
pe‧‧‧延伸參數
M‧‧‧量測幅度
Z1,Z2,Z3,Z4,Z5‧‧‧延伸區域
ZR,ZL,ZT,ZB‧‧‧延伸區域
S50‧‧‧位置資訊
S502‧‧‧若取得多個位置資訊，以各該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成多個延伸區域
S504‧‧‧若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域
S506‧‧‧以該擴展區域及未交疊的該些延伸區域為該更新區域
S510‧‧‧獲得該延伸參數
S512‧‧‧以各該位置資訊為中心，依據該延伸參數與該量測幅度形成多個延伸區域
S514‧‧‧若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域
S516‧‧‧以該擴展區域及未交疊的該些延伸區域為該更新區域
S52‧‧‧依據該位置資訊以及一量測幅度獲得一更新區域
S52’‧‧‧依據一延伸參數、該位置資訊以及一量測幅度獲得一更新區域
S520‧‧‧以該位置資訊為中心，向水平及垂直的正、負方向各延伸該量測幅度形成一延伸區域
S522‧‧‧以該延伸區域為該更新區域
S530‧‧‧獲得該延伸參數
S532‧‧‧以該位置資訊為中心，依據該延伸參數與該量測幅度形成一延伸區域
S534‧‧‧以該延伸區域為該更新區域
S54‧‧‧更新該更新區域的一背景雜訊10‧‧‧Sensing device
12‧‧‧Sensing controller
14‧‧‧Drive/Detection Unit
15‧‧‧Scratch
16‧‧‧ memory
18‧‧‧ processor
20‧‧‧First sensing layer
21a, 21b‧‧‧ first conductive element
22‧‧‧Second sensing layer
23a, 23b‧‧‧Second conductive element
24‧‧‧Sensing area
240,240'‧‧‧Extended area
242, E1, E2, E3, E4‧‧‧ extended area
30‧‧‧Host
32‧‧‧ display
34‧‧‧Central Processing Unit
36‧‧‧Active Area
G1, G2‧‧‧ Location Information Group
P1, P2, P3, P4, P5‧‧‧ Location information points
PR, PL, PT, PB‧‧‧ Location Information Point
Pe‧‧‧Extension parameters
M‧‧‧measuring range
Z1, Z2, Z3, Z4, Z5‧‧‧ extended areas
ZR, ZL, ZT, ZB‧‧‧ extended area
S50‧‧‧Location Information
S502‧‧‧If multiple position information is obtained, the measurement range is extended to the horizontal and vertical positive and negative directions to form a plurality of extended regions, centering on the position information
S504‧‧‧If there is overlap between the extended regions, the overlapping regions are overlapped to form an extended region
S506‧‧‧ The extended area and the unfolded extension areas are the update area
S510‧‧‧ Obtained the extension parameter
S512‧‧‧ is centered on each location information, and forms a plurality of extended regions according to the extension parameter and the measurement amplitude
S514‧‧‧If there is overlap between the extended regions, the overlapping regions will be overlapped to form an extended region
S516‧‧‧ The extended area and the unfolded extension areas are the update area
S52‧‧‧Acquire an update area based on the location information and a measurement range
S52'‧‧‧ obtains an update area based on an extension parameter, the position information, and a measurement range
S520‧‧‧ centering on the location information, extending the measurement amplitude to the horizontal and vertical positive and negative directions to form an extended region
S522‧‧‧The extension area is the update area
S530‧‧‧ Obtained the extension parameter
S532‧‧ ‧ centering on the location information, forming an extended region according to the extension parameter and the measurement amplitude
S534‧‧‧The extension area is the update area
S54‧‧‧Update a background noise in the update area
[第1圖]為應用本發明感測裝置的螢幕的電路方塊示意圖； [第2圖]為本發明感測裝置的背景訊號更新方法的流程示意圖； [第3圖]為本發明單一位置資訊的延伸區域的示意圖； [第4A圖]為本發明位置資訊組的延伸區域第一實施例的示意圖； [第4B圖]為本發明位置資訊組的延伸區域第二實施例的示意圖； [第5圖]為本發明位置資訊組的擴展區域與延伸區域第一實施例的示意圖； [第6圖]為本發明位置資訊組的擴展區域與延伸區域第二實施例的示意圖；以及 [第7圖]為第6圖實施例之流程示意圖。[Fig. 1] is a circuit block diagram of a screen to which the sensing device of the present invention is applied; [Fig. 2] is a flow chart showing a method for updating the background signal of the sensing device of the present invention; [Fig. 3] is a single position information of the present invention. [FIG. 4A] FIG. 4A is a schematic diagram of a first embodiment of an extended area of a location information group according to the present invention; [FIG. 4B] is a schematic diagram of a second embodiment of an extended area of a location information group of the present invention; 5 is a schematic diagram of a first embodiment of an extended area and an extended area of a location information group according to the present invention; [FIG. 6] is a schematic diagram of a second embodiment of an extended area and an extended area of a location information group according to the present invention; Figure] is a schematic flow chart of the embodiment of Figure 6.
S50‧‧‧位置資訊 S50‧‧‧Location Information
S510‧‧‧獲得該延伸參數 S510‧‧‧ Obtained the extension parameter
S512‧‧‧以各該位置資訊為中心，依據該延伸參數與該量測幅度形成多個延伸區域 S512‧‧‧ is centered on each location information, and forms a plurality of extended regions according to the extension parameter and the measurement amplitude
S514‧‧‧若該些延伸區域間有交疊，將交疊的該些延伸區域形成一擴展區域 S514‧‧‧If there is overlap between the extended regions, the overlapping regions will be overlapped to form an extended region
S516‧‧‧以該擴展區域及未交疊的該些延伸區域為該更新區域 S516‧‧‧ The extended area and the unfolded extension areas are the update area
S52’‧‧‧依據一延伸參數、該位置資訊以及一量測幅度獲得一更新區域 S52'‧‧‧ obtains an update area based on an extension parameter, the position information, and a measurement range
S530‧‧‧獲得該延伸參數 S530‧‧‧ Obtained the extension parameter
S532‧‧‧以該位置資訊為中心，依據該延伸參數與該量測幅度形成一延伸區域 S532‧‧ ‧ centering on the location information, forming an extended region according to the extension parameter and the measurement amplitude
S534‧‧‧以該延伸區域為該更新區域 S534‧‧‧The extension area is the update area
S54‧‧‧更新該更新區域的一背景雜訊 S54‧‧‧Update a background noise in the update area
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201042514A (en) * | 2009-05-21 | 2010-12-01 | Apex Material Technology Corp | Sensing system |
| TW201211869A (en) * | 2010-09-15 | 2012-03-16 | Advanced Silicon Sa | Method for detecting an arbitrary number of touches from a multi-touch device |
| TW201224850A (en) * | 2010-11-19 | 2012-06-16 | Microsoft Corp | Gesture recognition |
| TW201229876A (en) * | 2010-11-03 | 2012-07-16 | Qualcomm Inc | Force sensing touch screen |
| TW201303683A (en) * | 2011-06-27 | 2013-01-16 | Sharp Kk | Touch sensor system, and electronic device |
| TW201333754A (en) * | 2011-12-21 | 2013-08-16 | Nokia Corp | User gesture recognition |
| CN102096530B (en) * | 2011-01-28 | 2013-09-18 | 广东威创视讯科技股份有限公司 | Multi-touch trajectory tracking method |
| CN102341766B (en) * | 2009-09-03 | 2014-09-24 | 松下电器产业株式会社 | Tactile feedback method and device |
| US20140285469A1 (en) * | 2009-07-28 | 2014-09-25 | Cypress Semiconductor Corporation | Predictive Touch Surface Scanning |
| TW201444345A (en) * | 2012-12-19 | 2014-11-16 | Nvidia Corp | Apparatus and method for enhancing motion estimation based on user input |
-
2014
- 2014-12-15 TW TW103143749A patent/TWI550466B/en active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201042514A (en) * | 2009-05-21 | 2010-12-01 | Apex Material Technology Corp | Sensing system |
| US20140285469A1 (en) * | 2009-07-28 | 2014-09-25 | Cypress Semiconductor Corporation | Predictive Touch Surface Scanning |
| CN102341766B (en) * | 2009-09-03 | 2014-09-24 | 松下电器产业株式会社 | Tactile feedback method and device |
| TW201211869A (en) * | 2010-09-15 | 2012-03-16 | Advanced Silicon Sa | Method for detecting an arbitrary number of touches from a multi-touch device |
| TW201229876A (en) * | 2010-11-03 | 2012-07-16 | Qualcomm Inc | Force sensing touch screen |
| TW201224850A (en) * | 2010-11-19 | 2012-06-16 | Microsoft Corp | Gesture recognition |
| CN102096530B (en) * | 2011-01-28 | 2013-09-18 | 广东威创视讯科技股份有限公司 | Multi-touch trajectory tracking method |
| TW201303683A (en) * | 2011-06-27 | 2013-01-16 | Sharp Kk | Touch sensor system, and electronic device |
| TW201333754A (en) * | 2011-12-21 | 2013-08-16 | Nokia Corp | User gesture recognition |
| TW201444345A (en) * | 2012-12-19 | 2014-11-16 | Nvidia Corp | Apparatus and method for enhancing motion estimation based on user input |
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